Cryptography – Particular algorithmic function encoding – Public key
Patent
1997-10-24
2000-10-17
Swann, Tod R.
Cryptography
Particular algorithmic function encoding
Public key
34082504, H04L 930, H04L 900
Patent
active
061343277
ABSTRACT:
A method and apparatus for creating communities of trust within a secure communications system is accomplished by allowing end-users to obtain arbitrary lists of trusted public keys from other end-users and from associated authorities. Once an arbitrary list has been obtained by an end-user, the end-user determines whether it was obtained in a manner consistent with a security policy of the secured community. The security policy may enable an end-user to receive trusted public keys from other end-users, from associated authorities only, to receive public keys of associated authorities, other end users, or any combination thereof. When the arbitrary lists of trusted keys are obtained in a manner consistent with the security policy, the end-user adds keys of the arbitrary lists to a trusted key list. When a security-related operation is to be performed (e.g., verifying a signature of a received message or retrieving the encryption public key of a recipient for an outgoing message), any of the trusted keys contained within the trusted list may be used for authentication purposes.
REFERENCES:
patent: 5664017 (1997-09-01), Gressel et al.
patent: 5666416 (1997-09-01), Micall
patent: 5717758 (1998-02-01), Micall
Entrust Technologies Ltd.
Jack Todd
Swann Tod R.
LandOfFree
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